You make complete sense. Unfortunately it sounds too much like “heard” immunity, and many people think that it’s just a rumor.
Well, I do believe that with the concept of herd immunity that greater numbers of people will succumb to this pathogen.
But I also believe that the future misery that awaits us due to lost jobs, poverty, stress, international conflict, and lawlessness because we have destroyed an economy and people’s lives and businesses far, FAR outweighs the increased number that will die from the virus.